Tilting work support



June' 4, 1929. R.T.-HAZELTON [1,716,129

'ITILTING WORK SUPPOR'iI Filed Aug l, 1924 2 Sheets-Sheet June 19293 y R. T. HAZEL TON 1,716,129

I TILTING WORK SUPPORT I Filed Aug. 1, 1924 2 sheets-sheet 2 Illllll'llllllllll||lllllllll lllllllllllllllIllEillllIlll" mmm Patented June 4, 1929.

UNITED STATES PATENT OFFICE.

ROBERT T. HAZELTON, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI SHAPER COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

TILTING WORK surron'r.

Application filed August 1, 1924. Serial No. 729,622.

This invention relates to improvements in work supporting devices designed for use in conjunction with machine tools, the present design being particularly applicable to metal shapers as a universally adjustable work support or table and holder.

The device is herein shown as designed for attachment as a unit to the rail-or cross-rail of a shaper, is micrometrically rotatably adjustable about a horizontal axis, and is further provided with work supportingfaces at right angles to each other, one of the faces being micrometrically angularly adjustable about an axis right angularly related to the axis of rotation of the other adjustable portion of the unit.

An important feature of the invention rcsides in the provision of at least two work supporting faces one of which is adjustable and which when in mid-position has its face related to the other, as the adjacent sidesof a cube, thus providing means whereby either of two right angularly related work support ing faces can be alternately opposed to the tool.

Another feature of the invention is the provision of a retaining and wear take-up cap which further is adapted to function as a stationary gear with which is meshed a corre spondin gear mounted on the rotatable section of t e unit for angularly adjusting the section.

will appear as the description of the drawing proceeds, in which:

Figure -1 is a side-elevation of the work supporting and adjusting unit a portion of the table being broken away to show a portion of the means for adjusting the work holder. Figure 2 is an outer end view of the device.

Figure 3 is a vertical section approximately on line 33 of Figure 1. v V

Figure 4 is'afragmentary vertical sectional view on line 4-4 of Figure 1. 1

.the upper horizontal cross-way or rail of .the saddle, a suitable gib being interposed between the parts and take-up adjusting means being provided for the gib. The base portion is further provided with an obliquely upwardly directed projection in gibbed engagement with the face of the groove forming the cross-way of the saddle. The carriage portion has integral therewith and projecting horizontally therefrom a hollowtrunnion 5 as a spindle-like bearing substantially of cylindrical configuration and providing terminal circumferential bearing surfaces 6, 7, with which are engaged the corresponding surfaces of the bore of the substantially rec tangular table section of the work supporting unit. The trunnion could, however, be sup? ported in other ways and I do not limit myself to the present manner of attachment.

The table or'work supporting section 10 is adapted to be rotatably mounted and ad-- justable upon the trunnion and has substantially the form of a hollow cube centrally bored, ribbed interiorly to give the proper rigidity thereto and having one corner rounded and further having one lateral plane face 11 suitably machined and provided with parallel longitudinal work attaching grooves.

Upon this face of the table the work may be stationarily attached and disposed horizontally or vertically as desired by rotating the cubical work holding section upon" its support. h

At theinner rear end ofthe base/portion, the carriage-is provided with an integral diametrically disposed rib 12 to which is at tached a nut 13 having threaded engagement with the cross feed screw 14 for obtaining lateral movements of the unit upon the saddie-ways.

The illustration oithe saddle 15 is only fragmentary and any desired form of the same may be used or the base of the work support herein may be attached non-slidably to any other machine or part of a machine. The saddle is operated by a stationary elevating screw 16 in threaded connection with the bore of the driving sleeve gear 17. The operation of the saddle is well known and the same is only represented herein as illustrative of one of the cap element, and having threaded engagement with the trunnion. The screws may be adjusted andthe element translated inwardly to take up for Wear between the end faces of the table and its support. The retaining cap element is housed within a socket 22 of the work supporting section or table and the table is revoluble about the cap. The flange portion of the retaining element exteriorly is provided with gear or worm teeth 25 with which are engaged a worm 26 held'non-rotatably at the inner end of a shaft 27 eccentrically disposed and rotatable in a bushing 28 suitably held against rotation and translation in an opening of the table (see F gure 3). The shaft 27 is counterturned adacent its outer end and threaded for the receptlon of jam nuts 29 to resist the lateral strain on the worm shaft and for taking up 'end play. The shaft-is squared at the outer end for the reception of a suitable socketedtool for rotating the shaft. The outer end face of the table is provided with a mark 30 registerable with graduations 31 marked upon the end face of the trunnion, the gradnations representing the degrees and fractions of degrees of a circle.

By rotating the shaft the table ma ,therefore, be correspondingly rotated a out its axis and its work supporting faces placed at anydesired angle to the tool. Other forms 7 of gear connection may be used, the worm being preferable since play between the parts is avoided and micrometric adjustment is obtainable. j

The table, moreover, has another work sup- ,porting surface or \face, said surface being provided upon an adjustable work holder or I block 35 substantially of a cylindrical segmental configuration mounted for sliding rocking movement in a direction parallel with the trunnion axis and adapted when in midosition to have i-ts'work holding surface strictly related to the other surface as the faces of a 7 cube.

Th; workholder has its work supporting face provided with work attaching grooves and said holder may be tilted and locked in adjusted position. The work support 35 is mounted for rotative sliding movement, and

against disengagement from the table 10 in a novel manner, within what may be called a socket of the table. The work support is of hollow, preferably cast construction having its curved surface slidably engaged or engageable with the corresponding longitudinally aligned opposingly related transversely disposed segmental curved surfaces 86, in such manner that on applyin a thrust longitudinally to the curved sur ace the work support will rota'tably slide about an axis perpendicularly to the trunnion axis. For thus applying power to rotate or slide and ad ust the work holder to dispose its upper Work its curved face is herein asthat of a cord but it is obvious that this face could have other cord relations, and a diametric relation as well. This manner of mounting the block gives the desired rigidity and furthermore the height under the tool is not reduced, when adjustments are made.

As shown in Figure 4, the rack teeth are placed at one side of the adjustable work support to permit of the non-interfering place ment of the adjusting shaft and worm relative to the retaining cap which is housed with n the socket in the end of the table. This arrangement, moreover, brings both ad usting devices substantially adjacent one anotherv so that the adjustment of each can conveniently be made without undue change of position of the operator.

The shafts 27 and 52 are disposed in eccentric bushings which may be rotated to change the-relation of each adjusting shaft and gear I thereon,fortakingup wear between the meshing gears, providingauxiliary means for preventing play and making for accuracy of adjustment and obtaining rigid relation between the parts after adjustment.

The block surface when in extreme tilted I position is adapted to register and to assume a coplanar relation with the respective correspondingly inclined surfaces of the cubical table or work holding section 10 lateral movement of the work support 35 being prevented by the side walls of the table and upward or lateral movement from its seat is prevented and its rotative motion limited by frictional locking devices carried by the cross or tie rod 44 extending transversely of and through the block andloosely through arou- -ate slots 39 at relatively opposite sides thereof in the side walls of the block or work support.

I the table. l

One end of the rod 44 has threaded engage ment with the clamping element 42 and passes loosely through the clamping element 43, jam nuts being in threaded engagement with the rod at one end and one of said nuts being directly engaged or engageable with clamping element 43 for drawing the chamfered faces of the elements against the chamfered bores of the slots to lock the work holdor in adjusted position, and to prevent upward or outward displacements of the same from its socket or seat. This construction is best seen in Figure 4 at the right hand side of which the locking nuts have been shown.

The inner nut 45, engaged against the face of the element 43, is for limiting the outer movement of that element, or, in other words, is for limiting the degree of release movements of the elements when the outermost jam nut 46 is loosened. A cupped washer 47 is interposed between the element 43 and the nut 46 and surrounds the nut 45 to form a bridge between the two nuts to allow proper adjustment of the outermost nut. When the outer nut is tightened a thrust is communicated to element 43 and a pull to element 42 by means of the rod for bringing the clamping elements into action.

A second rod 50 is engaged into the oppo site check wall portion of the table between which the tilting work holder lies, and through the curved slots 39, one end thereof being threaded into the wall and the opposite end is also threaded and provided with a nut, whereby when the nut is tightened the table is tightly clamped to the rocking work holder.

Microinetric adjustment of the work holder is obtained through the worm 51 mounted at the end of the shaft 52 in a manner similar to that of the adjusting shaft of the uni: versal table 10 shown in Figure 3. Any fine degree of adjustment may be obtained for the tilting work support or block, by properly manipulating the screw shaft.

The work supporting unit provides means whereby the work may be tipped or rocked in small degree either longitudinally or transversely. Moreover, the device is only designed to obtain a relatively small range of adjustment and provides means by which the work is held wit-h greater firmnessjthan in other devices now in use. Thus the work table is movable about a horizontal axis which The edge of each slot is chainfered' as at 40 for engagement by correspondingly perpendicular to the axis of the tilting workholder whereby in combination with the vertical adjustment of the saddle, universal adjustment of the work may be obtained withoutchanging the relative positions of the work and support.

The device provides in additiontwo work supporting surfaces or tables, either one of which may be placed in any desired relation to the tool, and in which by use of the adj ustable block two pieces of work may be simultaneously supported, and one may be.additionally angularly adjusted.

The thrust upon the' adjustable work support are received by the curved bottom surfaces of the cavity and the clamping devices havepnly an end-wise engagement at the vertical sides of the support to retain and prevent a-ccidental rotation of the same after setting. The provision of hand operable worm controlled adjusting devices makes for convenience of operation and accuracy of setting.

Having described my invention, I claim:

1. In a device of the class described, a work table adapted for rotatable adjustment having a socket therein, a work supporting memher slidably fitted and adjustable Within said socket longitudinally thereof and axially at right angles to the axis of rotation of the table, for tilting the working face of the member, said member having aligned arcuate slots at opposite sides, each chamfered at one edge, clamping and retaining elements having por-' tions projecting into said slotsand engaged with the chamfered portions for retaining the work supporting member within the table, and a rod connecting the elements for forcing the same to clamping and retaining position. I

2. In a device of the class described, a work supporting table, a Work holder recessed within a face of the table and mounted to swing about a horizontal axis, gearing mounted within the table cooperating wlth said work holder for adjusting the holder to sustain the work thereon in different planes, and

clamping means extending transversely of.

my name.

, ROBERT 'r. HAZELTON; 

